51ºÚÁÏ

A collection of 7 worksheets on the following topics:

• Types of Triangles. A worksheet on determining the type of a given triangle with respect to its interior angles (acute-angled, obtuse-angled, right-angled) and with respect to its sides (scalene, isosceles, equilateral).
• Triangle Angle Sum Theorem. A worksheet on the triangle exterior angle theorem. The exercises require to find missing angles by using the triangle exterior angle theorem.
• Exterior Angle Theorem. A worksheet on the triangle exterior angle theorem. The exercises require to find missing angles by using the triangle exterior angle theorem.
• Isosceles, Equilateral and Right-Angled Triangles. A worksheet on isosceles, equilateral and right-angled triangles
  and the angle properties of these triangles.
  Congruent Triangles Introduction. An introductory worksheet on congruent triangles. The exercises require to identify the corresponding equal angles or sides of some given congruent triangles.
• Congruent Triangles (SSS, SAS, ASA, AAS). A worksheet on determining whether triangles are congruent by Side-Side-Side (SSS), Side-Angle-Side (SAS), Angle-Side-Angle (ASA), or Angle-Angle-Side (AAS).
• Congruent right-angled triangles. A worksheet on deciding whether a given pair of right-angled triangles are congruent.
  Detailed solutions are included.